PRODUCTION METHOD OF ACTIVE CATHODE MATERIAL FOR LITHIUM SECONDARY BATTERIES

摘要

Field of application: The invention relates to chemical power sources and can be used at lithium accumulator production. Essence of the invention: The method is realized by cathode deposition on stainless steel and aluminum as non-ballast coatings from the solution comprising iron, nickel, copper sulfates, sodium thiosulfate in the ratio, g/1: 7.0-9.0, 1.0-1.5, 0.5- 0.55 and 3.5-5.0, respectively, at pH 4.3-4.7 and 20-25° C, and active cathode material is produced as compact cobalt-sulfide deposits with the mass of 1-15 mg.cm² or dispersed powder from the solution to which cobalt sulfate and sodium sulfide are additionally introduced at the following component ratio (g/1 ): COSO₄ (- 7.0-9.0; FeSO₄ - 1.0-1.5; CuSO₄ - 0.3-0.5; Na₂S₂O₃ - 3.0-3.5; Na₂S - 1.0-1.5; NiSO₄ - 1.0-1.5. Technological result: The method provides increasing electrolysis process stability and improvement of the specific discharge characteristics of the produced metal-sulfide material of lithium chemical power sources.